JPS5550751A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5550751A
JPS5550751A JP12444378A JP12444378A JPS5550751A JP S5550751 A JPS5550751 A JP S5550751A JP 12444378 A JP12444378 A JP 12444378A JP 12444378 A JP12444378 A JP 12444378A JP S5550751 A JPS5550751 A JP S5550751A
Authority
JP
Japan
Prior art keywords
amplifier
circuit
coaxial cable
terminal
gain adjustment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12444378A
Other languages
Japanese (ja)
Other versions
JPS633487B2 (en
Inventor
Ichiharu Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DX Antenna Co Ltd
Original Assignee
DX Antenna Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DX Antenna Co Ltd filed Critical DX Antenna Co Ltd
Priority to JP12444378A priority Critical patent/JPS5550751A/en
Publication of JPS5550751A publication Critical patent/JPS5550751A/en
Publication of JPS633487B2 publication Critical patent/JPS633487B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE: To obtain the amplifier having the gain if f1/2 to the frequency f, by providing the negative feedback circuit including resistor and inductance between the input and output of the series circuit of amplifier and gain adjustment circuit.
CONSTITUTION: At the relay and amplification of CATV, the input signal from the coaxial cable is fed to the terminal 6, it is amplified at the transistor Tr2, and it is connected to the next stage amplifier from the output terminal 20 via the gain adjustment circuit 18. From the terminal 20, the series circuit of the resistor R30 and inductance L32 is connected to the base of Tr2 via the DC blocking capacitor C34 to constitute the negative feedback circuit. By suitably selecting the value of R30 and L32, the variable resistor 22 of the circuit 18 is changed for the gain adjustment depending on the length of coaxial cable, the f1/2 characteristics depending on the length of coaxial cable can be compensated to establish the amplifier simple in adjustment.
COPYRIGHT: (C)1980,JPO&Japio
JP12444378A 1978-10-09 1978-10-09 Amplifier Granted JPS5550751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12444378A JPS5550751A (en) 1978-10-09 1978-10-09 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12444378A JPS5550751A (en) 1978-10-09 1978-10-09 Amplifier

Publications (2)

Publication Number Publication Date
JPS5550751A true JPS5550751A (en) 1980-04-12
JPS633487B2 JPS633487B2 (en) 1988-01-25

Family

ID=14885622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12444378A Granted JPS5550751A (en) 1978-10-09 1978-10-09 Amplifier

Country Status (1)

Country Link
JP (1) JPS5550751A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256240A (en) * 1987-04-13 1988-10-24 Nippon Mining Co Ltd Method for continuous casting metal
US5072199A (en) * 1990-08-02 1991-12-10 The Boeing Company Broadband N-way active power splitter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256240A (en) * 1987-04-13 1988-10-24 Nippon Mining Co Ltd Method for continuous casting metal
JPH0465741B2 (en) * 1987-04-13 1992-10-21 Nippon Mining Co
US5072199A (en) * 1990-08-02 1991-12-10 The Boeing Company Broadband N-way active power splitter

Also Published As

Publication number Publication date
JPS633487B2 (en) 1988-01-25

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